Gas regulator and cut-off



(No Model.) 2 Sheets-Sheet 1,

A G. PALM. GAS REGULATOR AND GUT-OPP.

N0. 509,395. Patented NOV. 28, 1893.

(No Model.) 2 SheetsSheet 2; G. PALM.

GAS REGULATOR AND GUT-OFF.

Patented Nov. 28, 1893.

' GEORGE PALM, OF BUTLER, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO M. II.BROOKS, OF SAME PLACE.

GAS REGULATOR AND CUT-OFF.

SPECIFICATION forming part of Letters Patent No. 509,395, dated November28, 1893.

Application filed January 13, 1893- Serial No. 458,204. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE PALM, a resident of Butler, in the county ofButler and State of Pennsylvania, have invented a new and usefulImprovement in Gas Regulators and Out'Offs; and I do hereby declare thefollowing to be a full, clear, and exact description thereof.

My invention relates to gas regulators and cut-ode, and has specialreference to a device for use on steam boilers although it can be usedin connection with other objects and for other purposes.

The object of my invention is to provide a gas regulator and cut-offwhich will automatically shut off the supply of gas or other fluid fedto the boiler when the steam pressure becomes too high therein, therebyputting out the fire and preventing explosions so frequent from neglectand carelessness.

Another object of my invention is to regulate the supply of gas fed tothe boiler, so that the steam pressure cannot get too high or too low inthe boiler, but can always be kept at the desired amount required tooperate the machinery.

My invention consists, generally stated, in combining with a fuelregulator, a steam boiler and furnace, a fuel supply pipe leading to theregulator, a fuel exit pipe leading therefrom to the furnace, a valve inthe regulator, a detent for the valve, a thermostatic tube leading fromthe boiler at or about the low water line, a rod connecting the end ofsaid tube with the detent so that by the expansion of the tube thedetent is released and means for closing the valve.

It also consists in certain other details of construction andcombination of parts, all of which will be more fully hereinafter setforth and claimed.

To enable others skilled in the art to make and use my invention, I willdescribe the same more fully, referring to the accompanying drawings inwhich- Figure 1 is a side view of a steam boiler showing my inventionapplied thereto. Fig. 2 is a front View of the same. Fig. 3 is a planView of the gas regulator or cut-off. Fig. 4 is a longitudinal sectionof the same. Fig. 5 is an end view of the same. Fig. 6 is an enlargedcross section of the same on the line 66, Fig. 4. Fig. 7 is an enlargedcross sec tion on the line 7-7, Fig. 4. Fig. 8 is an enlargedlongitudinal section of the gas regulator and cut-off, and Fig. 9 is across section of the same on the line 9-9, Fig. 8.

Like letters herein indicate like parts in each of the figures of thedrawings.

My invention is shown as applied to a steam boiler of common form, butit may be used with any other form of boiler or object desired. Thesteam boiler ahas the steam dome b, whistle c communicating therewith,and the high, medium and low water gage cocks d d d on the front of thesteam boiler.

Located on one side of the steam boiler a. near the fire box a is thegas regulator and cut-off e which has formed in its case 6 the chambersf f which are connected by a passage g formed between them. Movingwithin said passage g is the valve g which has the valve stem 9 thereon,having at one end the head 9 The gas regulator and cut-off e has the gassupply pipe e leading into it, as at 6 and the gas discharge pipe 2leading therefrom at e and into the fire box a of the steam boiler a, asat e. The gas regulator or cutoff 6 has the flange e formed on one endto which is bolted the plate h by means of the bolts h, this plate 72-being cut away, as at 71/2, to form the steam pressure chamber its forthe entrance ofithe steam. Interposed between the flange el'and theplate h is the diaphragm 1', while leading into the chamber 72,3 throughthe plate his the steam pipe j which takes its supply from the dome b ofthe steam boiler a, as at j The steam from the steam pipe 7 acts toregulate the supply of gas to the steam boiler to by means of the steampressing against the diaphragm t' which is communicated to the valve gby means of the head 9 on the valve stem resting against the diaphragm.The steam pressure pipe j has the valve 7' thereon, and the petcock jnear the gas regulator or cut-off e, so that the steam can be exhaustedfrom said pipe j when desired. At the opposite end on the gas regulatoror cut-off e from the flange e is the opening e through which passes thedetent 7a. This detent is formed in two parts 70' k and passes throughthe bearing Z connected with the gas regulator or cutoff e by means ofthe supports Z formed as part of the bearing Z and gas regulator andcut-off. The part of the detent It has the threaded end 70 with whichthe part k having the threaded socket k engages. The detent 7c isprovided with the annnlar collar k between which and the valve g in thepassage 9 aheavy spiral spring 7a is interposed.

The gas regulator and cut-off c has the stuffing box on through whichthe detent it passes, the said stuffing box m being formed by thethreaded end m on the gas regulator and cut-0E e, and the threadedcoupling m engaging with said threaded end m.

Passing through an opening 41 in the hearing Z and entering an annularseat n in the detent k is the pin 0 which has the notch 0 thereon withwhich a rodp engages by means of a book 19 thereon, this rod 13 beingconnected at 10 to an expansion pipe g which extends up verticallyalongside of the steam boiler a and in line with the rod p. Theexpansion pipe q is supported in abearing 1" extending out and formingpart of the gas regulator and cut-olf c and has the drip valve qthereon, while communicating with the expansion pipe q is the branchpipe g which connects with the gage cock cl at or near the low waterline in the boiler.

Projecting out from the end of the gas regulator and cut-off e is theextension or lug s on which hangs by a hook or loop 15 the weight u,this loop t extending up in front and in the course of the detent 70.Connected to the weightu by any suitable means is the cordc whichoperates the whistle c on the boiler. An opening w is formed in the endof the detent 70 into which any suitable bar or lever can be inserted toturn the part 10 by means of its threaded socket 7.1 being connected tothe threaded end it on the part 70' and so increase or decrease thetension on the spring 10 and the length of movement of the valve g inthe gas regulator and cut-0E.

The operation of my invention is as follows:-The steam boiler orcontains the usual amount of water which generates the steam under theinfluence of the fire contained in the fire box a, the steam filling thespace in the upper part of the boiler 01. and the dome b to which isconnected the steam pressure pipe j attached to the gas regulator orcut-off located at the side of the boiler. In case the steam pressure inthe boiler becomes too high, the steam passes into the pipe j andstrikes the diaphragm t' against which rests the head 9 of the valve 9,and so acts to regulate the amount of gas fed through the passage g fromthe gas supply pipe (3 and the chamber f into the fire box a of theboiler through the discharge pipe e When the water in the boiler becomestoo low, the hot steam will pass into the expansion pipe q through thebranch pipe (1 from the gage cock d on the boiler, so heating saidexpansion pipe q and expanding the same which raises the rod 19connected thereto and to the pin ,0, and frees said pin 0 fromengagement with its seat at in the detent k. The detent k is thenreleased and the pressure on the spring is relieved, which allows thevalve g to close the passage 9 and shut off the supply of gas fed intothe chamber ffrom the gas supply pipe. In order to sound an alarm uponthe shutting off of the gas, the end of the detent it, at the instantalmost of its release by the withdrawal of the pin 0, strikes againstthe loop t, carrying the weight it, which knocks the said weight u offthe extension or lug s on the gas regulator or cut-off e and blows thewhistle c on the dome b of the boiler through the medium of the cord 1;attached thereto. When it is desired to reset the valve 9', all that isnecessary is to shut off the entrance of the steam into the pipe j bymeans of the valve j. Then the petcock j can be opened, allowing anysurplus steam in the pipej to escape, when the detent 70 can be pushedback by hand so compressing the spring k which moves the valve 9 back soas to open the passage g for the entrance of the gas. The pin 0 is theninserted in the annular seat 12' of the detent lo and the rod 19connected to the pin 0; the valve j can then be opened and the petcock7' closed, when the gas regulator and cut-off is again ready for anotheroperation.

The apparatus is simple in its construction, positive in its movement,and not liable to get out of order. It can be applied to any form ofboiler easily and cheaply, and overcomes all liability of explosions sofrequently caused by low water and high steam pressure.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In gas regulators and cut-ofiis, the combination with a fuelregulator, of a steam boiler and furnace, a fuel supply pipe leading tothe regulator, a fuel exit pipe leading therefrom to the furnace, avalve in the regulator, a detent for the valve, a thermostatic tubeleading from the boiler at or about the low water line, a rod connectingthe end of said tube with the detent so that by the expansion of thetube the detent is released, and means for closing the valve,substantially as and for the purposes set forth.

2. In gas regulators and cut-offs, the combination with a fuelregulator, of a steam boiler and furnace,a fuel supply pipe leading tothe regulator, a fuel exit pipe leading therefrom to the furnace, avalve in the regulator, a detent for the valve, a thermostatic tubeleading from the boiler at or about the low water line and having a rodconnected thereto, a pin connected to the rod and to the detent for thevalve, so that when the said pin is withdrawn, the detent is releasedand will permit the closing of the valve and so shut off the fuelsupply, substantially as and for the purposes set forth.

3. In gas regulators and cut-offs, the combination with a fuelregulator, of a steam boiler and furnace, a fuel supply pipe leading tothe regulator, a fuel exit pipe leading therefrom to the furnace, avalve in the regulator, a detent for the Valve, a thermostatic tubeleading from the boiler at or about the low waterline and having a rodconnected thereto, a pin connected to the rod and to the detent for thevalve, said detent being spring operated so that when said pin iswithdrawn the spring operated detent is released and will permit theclosing of the valve and shut off the fuel supply, substantially as andfor the purposes set forth.

4. In gas regulators and cut-off apparatus, the combination of aregulator case, a fuel supply pipe, an exit pipe, a cut-off valve Withinthe regulator case, a separate detent sliding in the case, a springconfined between the valve and detent and a pin holding the detent inplace, and means for operating the valve when the detent is released,substan tiaily as and for the purposes set forth.

5. In gas regulators and cut-off apparatus, the combination of aregulator case, a fuel supply pipe, an exit pipe, a cut-01f valve withinthe regulator case, a separate detent sliding in the case, a springconfined between the valve and detent and a pin engaging with a seat insaid detent and holding it in place, and means for operating the valvewhen the detent is released, substantially as and for the purposes setforth.

6. In gas regulator and cutoif apparatus, the combination of a regulatorcase, a separate detent sliding in the case, a spring confined betweenthe valve and detent, a whistle, and a weight supported in the course ofthe detent and adapted to drop when forced from its support by thedetent and so act to operate the whistle, substantially as and for thepurposes set forth.

In testimony whereof I, the said GEORGE PALM, have hereunto set my hand.

GEORGE PALM.

Witnesses:

G. W. CAMPBELL, J. N. 600m.

